3

TABLE OF CONTENTS

Safety Warnings

2

Safety Instructions

4

Introduction/Usage guidelines

5

Setting up and positioning the projector

6

Projection distances

7

Video device connections

8

Displaying a video image

10

Connecting a computer

11

Shutting down the projector

12

Troubleshooting your setup

12

Using the keypad buttons

15

Using the remote control

16

Optimizing video images

17

Customizing the projector

17

Using the menus

17

Picture menu

18

Settings menu

22

Maintenance

24

Cleaning the lens

24

Replacing the projection lamp

25

Specifications

26

Red LED behavior and projector errors

27

Source compatibility

27

Projector dimensions for ceiling mount installations

29

RS-232 terminal specifications

30

Warranty

34

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Knoll HD284 user manual Table of Contents